JP5289178B2 - Control device and control method for voltage fluctuation compensation device for electric railway - Google Patents

Control device and control method for voltage fluctuation compensation device for electric railway Download PDF

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JP5289178B2
JP5289178B2 JP2009117334A JP2009117334A JP5289178B2 JP 5289178 B2 JP5289178 B2 JP 5289178B2 JP 2009117334 A JP2009117334 A JP 2009117334A JP 2009117334 A JP2009117334 A JP 2009117334A JP 5289178 B2 JP5289178 B2 JP 5289178B2
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秀一 長門
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Mitsubishi Electric Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

この発明は、電気鉄道用電圧変動補償装置の制御装置及び制御方法に関し、特に、三相／二相変換する単相交流き電システムにおいて同相き電もしくは片座き電にて電力供給する場合、電気鉄道用電圧変動補償装置を設置した時の制御装置に関するものである。   The present invention relates to a control device and a control method for a voltage fluctuation compensator for electric railways, and in particular, when power is supplied by in-phase power or single-seat power in a single-phase AC power feeding system that performs three-phase / two-phase conversion. The present invention relates to a control device when an electric railway voltage fluctuation compensation device is installed.

単相交流き電システムにおいて、基本的にＭ座及びＴ座のうち一方のき電（母）線を接続する同相き電もしくは片座き電では、き電線と接続されない片座と接続するインバータ装置は、有効電力の融通のみを行う制御方式を採用していた。このような制御方式は例えば特許文献１に開示されている。   In a single-phase AC feed system, an inverter connected to a single seat that is not connected to a feeder in the same-phase feed or one-seat feed that basically connects one of the M and T seats. The apparatus employs a control method that only allows the exchange of active power. Such a control method is disclosed in Patent Document 1, for example.

特開２００４−３１４７０２号公報（段落[００４０]，図１）JP 2004-314702 A (paragraph [0040], FIG. 1)

三相／二相変換する単相交流き電システムの電力供給方式の形態である同相き電もしくは片座き電において、電気鉄道用電圧変動補償装置（ＲＰＣ（Railway Static Power Conditioner））により有効電力融通と無効電力補償する場合、従来の制御方式では、き電線と接続されない片座と接続した一方のインバータ装置は、無効電力補償には何ら関与しておらず、三相電源側の三相不平衡を十分に改善できていないという問題点があった。   In in-phase or single-seat power supply, which is a form of power supply for a single-phase AC power system that converts three-phase / two-phase, effective power is supplied by a voltage fluctuation compensator (RPC (Railway Static Power Conditioner)) for electric railways. In the case of interchange and reactive power compensation, in the conventional control method, one inverter connected to a single seat that is not connected to the feeder does not participate in reactive power compensation at all, and the three-phase power supply on the three-phase power supply side is not involved. There was a problem that the balance could not be improved sufficiently.

この発明は上記問題点を解決するためになされたもので、三相電源側の三相不平衡を改善させた電気鉄道用電圧変動補償装置の制御装置及び制御方法を得ることを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a control device and a control method for a voltage fluctuation compensator for an electric railway, in which the three-phase unbalance on the three-phase power supply side is improved.

この発明に係る請求項１記載の電気鉄道用電圧変動補償装置の制御装置は、電気鉄道用の電圧変動補償装置を制御する電圧変動補償装置の制御装置であって、前記電圧変動補償装置は、電気鉄道用三相／二相変換変圧器により第１及び第２のき電線から供給される第１及び第２の単相交流電力のうち、前記第１の単相交流電力を前記第１のき電線を介して電車負荷に供給する電気鉄道用電力給電システムにおける有効電力及び無効電力を、前記第１及び第２のき電線に接続される第１及び第２のインバータを用いて補償し、前記第１のき電線の無効電力を少なくとも検出する負荷検出手段と、前記無効電力に基づき、前記第１のき電線の無効電力を補償するための第１の補償用無効電力を算出し、該第１の補償用無効電力によって前記第１のき電線の無効電力がゼロに近づくように、前記第１のインバータを制御する第１のインバータ無効電力制御手段とを備え、前記第１のインバータにおける前記第１の補償用無効電力の最大値が、電流耐量以内の出力に制限するリミッタ制限手段により前記第１のインバータを構成する容量によって予め制限されており、前記第１の補償用無効電力によって前記無効電力を完全に補償できない場合、前記無効電力及び前記第１の補償用無効電力間の差分値に基づき前記第１の補償用無効電力の位相と正反対となる逆方向の位相を有する第２の補償用無効電力を算出し、前記第２の補償用無効電力によって前記第２のき電線に無効電力を発生させるように、前記第２のインバータを制御する第２のインバータ無効電力制御手段をさらに備える。 According to a first aspect of the present invention, there is provided a control device for a voltage fluctuation compensator for an electric railway, which is a control device for a voltage fluctuation compensator for controlling a voltage fluctuation compensator for an electric railway, wherein the voltage fluctuation compensator comprises: Of the first and second single-phase AC power supplied from the first and second feeder lines by the three-phase / two-phase conversion transformer for electric railway, the first single-phase AC power is converted into the first single-phase AC power. Compensating the active power and reactive power in the electric power supply system for electric railways supplied to the train load via the feeder using the first and second inverters connected to the first and second feeders, Load detecting means for detecting at least reactive power of the first feeder, and calculating first compensation reactive power for compensating reactive power of the first feeder based on the reactive power; The first compensation reactive power causes the first compensation As the reactive power of the electric wire approaches zero, the maximum value of said first and a first inverter reactive power control means for controlling the inverter, wherein the first inverter first compensation reactive power, When the reactive power is limited in advance by the capacity constituting the first inverter by the limiter limiting means for limiting the output to within the current withstand capability, and the reactive power cannot be completely compensated by the first compensating reactive power, the reactive power And calculating a second compensation reactive power having a phase in the opposite direction to the phase of the first compensation reactive power based on the difference value between the first compensation reactive power and the second compensation reactive power. Second inverter reactive power control means is further provided for controlling the second inverter so that reactive power is generated in the second feeder by compensating reactive power.

請求項１記載の電圧変動補償装置の制御装置における第２のインバータ無効電力制御手段は、第１の補償用無効電力によって無効電力を完全に補償できない場合でも、電車負荷に電力供給を行っていない第２のき電線に対し、無効電力及び第１の補償用無効電力間の差分値に基づき得られる、第１の補償用無効電力の位相と正反対となる逆方向の位相を有する第２の補償用無効電力によって第２のき電線に無効電力を発生させるように、第２のインバータの無効電力補償動作を制御している。

The second inverter reactive power control means in the voltage fluctuation compensator control device according to claim 1 does not supply electric power to the train load even when the reactive power cannot be completely compensated for by the first compensating reactive power. A second compensation having a phase in the opposite direction to the phase of the first compensation reactive power, obtained based on the difference value between the reactive power and the first compensation reactive power for the second feeder. The reactive power compensation operation of the second inverter is controlled so that the reactive power is generated in the second feeder by the reactive power.

その結果、第１及び第２の補償用無効電力によって無効電力補償動作を行うことができるため、電気鉄道用三相／二相変換変圧器における三相電源側の三相不平衡をより一層改善させることができる効果を奏する。   As a result, the reactive power compensation operation can be performed by the first and second compensating reactive powers, so that the three-phase unbalance on the three-phase power supply side in the three-phase / two-phase conversion transformer for electric railway is further improved. The effect which can be made is produced.

この発明の実施の形態１の制御対象である電圧変動補償装置を用いた電気鉄道用電力給電システムの構成を模式的に示す説明図である。It is explanatory drawing which shows typically the structure of the electric power feeding system for electric railways using the voltage fluctuation compensation apparatus which is the control object of Embodiment 1 of this invention. この発明の実施の形態１である電気鉄道用電圧変動補償装置の制御装置の構成を示すブロック図である。It is a block diagram which shows the structure of the control apparatus of the voltage fluctuation compensation apparatus for electric railways which is Embodiment 1 of this invention. この発明の実施の形態１である電気鉄道用電圧変動補償装置の制御装置の効果をシミュレーションした結果を示す説明図である。It is explanatory drawing which shows the result of having simulated the effect of the control apparatus of the voltage fluctuation compensation apparatus for electric railways which is Embodiment 1 of this invention. この発明の実施の形態２の制御対象である電圧変動補償装置を用いた電気鉄道用電力給電システムの構成を模式的に示す説明図である。It is explanatory drawing which shows typically the structure of the electric power feeding system for electric railways using the voltage fluctuation compensation apparatus which is the control object of Embodiment 2 of this invention. この発明の実施の形態２である電気鉄道用電圧変動補償装置の制御装置の構成を示すブロック図である。It is a block diagram which shows the structure of the control apparatus of the voltage fluctuation compensation apparatus for electric railways which is Embodiment 2 of this invention.

＜実施の形態１＞
図１はこの発明の実施の形態１である電気鉄道用電圧変動補償装置の制御装置の制御対象である電気鉄道用電圧変動補償装置を用いた電気鉄道用電力給電システムの構成を模式的に示す説明図である。同図において、電気鉄道用電圧変動補償装置（ＲＰＣ）３（以下、「電圧変動補償装置３」と略記する。）を備えた同相き電もしくは片座き電における電気鉄道用電力給電システムを示している。 <Embodiment 1>
FIG. 1 schematically shows a configuration of an electric railway power supply system using an electric railway voltage fluctuation compensator that is a control target of the electric railway voltage fluctuation compensator controller according to the first embodiment of the present invention. It is explanatory drawing. In the figure, a power supply system for an electric railway in in-phase or single-seat electric power supply equipped with an electric railway voltage fluctuation compensator (RPC) 3 (hereinafter abbreviated as “voltage fluctuation compensator 3”) is shown. ing.

同図において、三相／二相変換変圧器１は電気鉄道用であるスコット結線変圧器や変形ウッド結線変圧器を含む三相／二相変換変圧器である。三相／二相変換変圧器１により三相／二相変換されたＭ座電力（第１の単相交流電力）及びＴ座電力（第２の単相交流電圧）がＭ座側き電線１８ｍ及びＴ座側き電線１８ｔ（第１及び第２のき電線）より得られる。Ｍ座電力が供給されるＭ座側のき電線１８ｍ（第１のき電線）にトロリー線１５を介してレール１６上を走行する列車負荷２が接続される。   In the figure, a three-phase / two-phase conversion transformer 1 is a three-phase / two-phase conversion transformer including a Scott connection transformer and a modified Wood connection transformer for electric railways. The M-seat power (first single-phase AC power) and the T-seat power (second single-phase AC voltage) that have been three-phase / two-phase converted by the three-phase / two-phase transformer 1 And the T seat side feeder 18t (first and second feeders). A train load 2 traveling on the rail 16 is connected via a trolley wire 15 to an M seat side feeder 18m (first feeder) to which M seat power is supplied.

三相／二相変換変圧器１のＭ座側き電線１８ｍ及びＴ座側き電線１８ｔ（第２のき電線）に電圧変動補償装置３が接続される。電圧変動補償装置３内においてＭ座側単相変圧器４は三相／二相変換変圧器１のＭ座側き電線１８ｍに接続され、Ｔ座側単相変圧器５は三相／二相変換変圧器１のＴ座側き電線１８ｔに接続される。なお、本明細書中で述べるＭ座及びＴ座は結線方式によりＡ座及びＢ座を含む意味で用いている。   The voltage fluctuation compensating device 3 is connected to the M seat side feeder 18m and the T seat side feeder 18t (second feeder) of the three-phase / two-phase conversion transformer 1. In the voltage fluctuation compensating device 3, the M seat side single phase transformer 4 is connected to the M seat side feeder 18m of the three phase / two phase conversion transformer 1, and the T seat side single phase transformer 5 is a three phase / two phase. It is connected to the T seat side feeder 18t of the conversion transformer 1. In addition, M seat and T seat described in this specification are used in the meaning including A seat and B seat by a connection system.

Ｔ座側単相変圧器５，Ｍ座側単相変圧器４間は、Ｔ座側単相変圧器５からＭ座側単相変圧器４にかけてＴ座インバータ７（第２のインバータ）、直流コンデンサ１７及びＭ座インバータ６（第１のインバータ）を介して接続される。なお、Ｍ座インバータ６は交流側がＭ座側単相変圧器４と接続され、Ｔ座インバータ７は交流側がＴ座側単相変圧器５と接続され、Ｍ座インバータ６，Ｔ座インバータ７それぞれの直流側が直流コンデンサ１７を介して接続される。また、三相／二相変換変圧器１、Ｍ座側単相変圧器４、Ｔ座側単相変圧器５、Ｍ座インバータ６及びＴ座インバータ７それぞれの具体的な構成は、本発明と直接関係がないため説明を省略する。   Between the T-seat side single-phase transformer 5 and the M-seat side single-phase transformer 4, a T-seat inverter 7 (second inverter), DC is applied from the T-seat side single-phase transformer 5 to the M-seat side single-phase transformer 4. The capacitor 17 and the M seat inverter 6 (first inverter) are connected. The AC side of the M seat inverter 6 is connected to the M seat side single-phase transformer 4, and the T seat inverter 7 is connected to the T seat side single phase transformer 5 on the AC side. Are connected via a DC capacitor 17. The specific configurations of the three-phase / two-phase conversion transformer 1, the M-seat-side single-phase transformer 4, the T-seat-side single-phase transformer 5, the M-seat inverter 6 and the T-seat inverter 7 are the same as the present invention. Description is omitted because there is no direct relationship.

このような構成の電圧変動補償装置３が実施の形態１の電気鉄道用電圧変動補償装置の制御装置１９の制御対象となる。   The voltage fluctuation compensator 3 having such a configuration is controlled by the controller 19 of the electric railway voltage fluctuation compensator of the first embodiment.

図２はこの発明の実施の形態１である電気鉄道用電圧変動補償装置の制御装置１９の構成を示すブロック図である。   FIG. 2 is a block diagram showing the configuration of the control device 19 of the electric railway voltage fluctuation compensator according to the first embodiment of the present invention.

図２で示すように、電圧変動補償装置３の制御装置１９は、負荷検出手段９、Ｍ座側無効電力補償用算出手段１０、融通有効電力用算出手段１１、Ｔ座側無効電力補償用算出手段１２、Ｍ座インバータゲート制御手段１３及びＴ座インバータゲート制御手段１４から構成されている。   As shown in FIG. 2, the control device 19 of the voltage fluctuation compensation device 3 includes a load detection unit 9, an M seat side reactive power compensation calculation unit 10, a flexible active power calculation unit 11, and a T seat side reactive power compensation calculation. It comprises means 12, M-seat inverter gate control means 13 and T-seat inverter gate control means 14.

負荷検出手段９は、三相／二相変換変圧器１のＭ座側き電線１８ｍにおけるＭ座側負荷８の有効電力Ｐｍ及び無効電力Ｑｍを検出する。   The load detection means 9 detects the active power Pm and reactive power Qm of the M seat side load 8 in the M seat side feeder 18m of the three-phase / two-phase conversion transformer 1.

Ｍ座側無効電力補償用算出手段１０は負荷検出手段９より得た無効電力Ｑｍに基づき補償用無効電力ＱＲｍ（第１の補償用無効電力）を算出する。Ｍ座インバータゲート制御手段１３は補償用無効電力ＱＲｍに基づきＭ座インバータ６による無効電力補償動作を（ゲート）制御する。すなわち、Ｍ座側無効電力補償用算出手段１０及びＭ座インバータゲート制御手段１３によりＭ座インバータ６の無効電力補償動作を制御する第１のインバータ無効電力制御手段を構成する。   The M seat side reactive power compensation calculation means 10 calculates a compensation reactive power QRm (first compensation reactive power) based on the reactive power Qm obtained from the load detection means 9. The M seat inverter gate control means 13 (gate) controls the reactive power compensation operation by the M seat inverter 6 based on the compensation reactive power QRm. In other words, the M seat side reactive power compensation calculating means 10 and the M seat inverter gate control means 13 constitute first inverter reactive power control means for controlling the reactive power compensation operation of the M seat inverter 6.

Ｔ座側無効電力補償用算出手段１２は無効電力Ｑｍ及び補償用無効電力ＱＲｍに基づき補償用無効電力ＱＲｔ（第２の補償用無効電力）を算出する。Ｔ座インバータゲート制御手段１４は補償用無効電力ＱＲｔに基づきＴ座インバータ７の無効電力補償動作を（ゲート）制御する。すなわち、Ｔ座側無効電力補償用算出手段１２及びＴ座インバータゲート制御手段１４によりＴ座インバータ７の無効電力補償動作を制御する第２のインバータ無効電力制御手段を構成する。   The T-seat side reactive power compensation calculation means 12 calculates a compensation reactive power QRt (second compensation reactive power) based on the reactive power Qm and the compensation reactive power QRm. The T-seat inverter gate control means 14 (gate) controls the reactive power compensation operation of the T-seat inverter 7 based on the compensation reactive power QRt. That is, the T seat side reactive power compensation calculating means 12 and the T seat inverter gate control means 14 constitute second inverter reactive power control means for controlling the reactive power compensation operation of the T seat inverter 7.

融通有効電力用算出手段１１は負荷検出手段９より得た有効電力Ｐｍに基づき融通有効電力Ｐｃを算出する。Ｍ座インバータゲート制御手段１３及びＴ座インバータゲート制御手段１４は融通有効電力Ｐｃに基づきＭ座インバータ６及びＴ座インバータ７の有効電力融通動作を制御する。すなわち、融通有効電力用算出手段１１及びＭ座インバータゲート制御手段１３によりＭ座インバータ６に対し有効電力融通動作を制御する第１のインバータ有効電力制御手段を構成し、融通有効電力用算出手段１１及びＴ座インバータゲート制御手段１４によりＴ座インバータ７に対し有効電力融通動作を制御する第２のインバータ有効電力制御手段を構成する。   The flexible active power calculation means 11 calculates the flexible active power Pc based on the active power Pm obtained from the load detection means 9. The M seat inverter gate control means 13 and the T seat inverter gate control means 14 control the active power accommodation operation of the M seat inverter 6 and the T seat inverter 7 based on the accommodation active power Pc. That is, a first inverter active power control means for controlling the active power accommodation operation for the M seat inverter 6 is constituted by the accommodation active power calculation means 11 and the M seat inverter gate control means 13, and the accommodation active power calculation means 11. The T-seat inverter gate control means 14 constitutes second inverter active power control means for controlling the active power interchange operation for the T-seat inverter 7.

なお、Ｍ座インバータ６及びＴ座インバータ７は、それぞれ決められた電流耐量以内の出力に制限するリミッタ制限手段を備えている。   The M-seat inverter 6 and the T-seat inverter 7 are each provided with limiter limiting means for limiting the output to a value within the determined current withstand capability.

以上のように構成された電圧変動補償装置３の制御装置１９における制御方法を説明する。実施の形態１の制御装置１９は、Ｍ座側負荷８であるＭ座側き電線１８ｍの有効電力Ｐｍ、無効電力Ｑｍを負荷検出手段９により検出して、以下の制御を行う。   A control method in the control device 19 of the voltage fluctuation compensator 3 configured as described above will be described. The control device 19 of the first embodiment detects the effective power Pm and reactive power Qm of the M seat side feeder 18m, which is the M seat side load 8, by the load detection means 9, and performs the following control.

（１）列車負荷２側のき電母線（第１のき電線）であるＭ座側き電線１８ｍに接続したＭ座インバータ６（第１のインバータ）は以下のように制御される。   (1) The M seat inverter 6 (first inverter) connected to the M seat side feeder 18m which is a feeder line (first feeder) on the train load 2 side is controlled as follows.

（有効電力融通動作の制御）
上記第１のインバータ有効電力制御手段（融通有効電力用算出手段１１＋Ｍ座インバータゲート制御手段１３）は、Ｍ座側き電線１８ｍの有効電力Ｐｍの１／２を最大分担する融通有効電力Ｐｃを出力するようにＭ座インバータ６を制御する。なお、残りの有効電力（Ｐｍ−Ｐｃ）は三相／二相変換変圧器１のＭ座（Ｍ座側き電線１８ｍ）から供給するようにする。 (Control of active power interchange operation)
The first inverter active power control means (accommodation active power calculation means 11 + M seat inverter gate control means 13) outputs the accommodation active power Pc that makes the largest share of 1/2 of the active power Pm of the M seat side feeder 18m. Thus, the M seat inverter 6 is controlled. The remaining active power (Pm−Pc) is supplied from the M seat (M seat side feeder 18m) of the three-phase / two-phase conversion transformer 1.

（無効電力補償動作の制御）
上記第１のインバータ無効電力制御手段（Ｍ座側無効電力補償用算出手段１０＋Ｍ座インバータゲート制御手段１３）は、Ｍ座側き電線１８ｍの無効電力Ｑｍを最大補償する補償用無効電力ＱＲｍを出力するようにＭ座インバータ６を制御する。 (Control of reactive power compensation operation)
The first inverter reactive power control means (M seat side reactive power compensation calculation means 10 + M seat inverter gate control means 13) outputs a compensation reactive power QRm for maximum compensation of the reactive power Qm of the M seat side feeder 18m. Thus, the M seat inverter 6 is controlled.

なお、Ｍ座インバータ６における融通有効電力Ｐｃと補償用無効電力ＱＲｍの最大値は、電流耐量以内の出力に制限するリミッタ制限手段によりＭ座インバータ６を構成する容量によって予め制限されている。したがって、「ＱＲｍ＝Ｑｍ」とするのが理想であるが、上述した補償用無効電力ＱＲｍの最大値の制限により、「ＱＲｍ＝Ｑｍ」を実現できない場合がある。   Note that the maximum values of the interchangeable active power Pc and the compensation reactive power QRm in the M seat inverter 6 are limited in advance by the capacity constituting the M seat inverter 6 by the limiter limiting means that limits the output to within the current withstand capability. Therefore, it is ideal to set “QRm = Qm”, but “QRm = Qm” may not be realized due to the limitation on the maximum value of the compensation reactive power QRm described above.

（２）三相／二相変換変圧器１のＴ座側（Ｔ座側き電線１８ｔ：第２のき電線）に接続したＴ座インバータ７は以下のように制御される。   (2) The T-seat inverter 7 connected to the T-seat side (T-seat side feeder 18t: second feeder) of the three-phase / two-phase conversion transformer 1 is controlled as follows.

（有効電力融通動作の制御）
上記第２のインバータ有効電力制御手段（融通有効電力用算出手段１１＋Ｔ座インバータゲート制御手段１４）は出力する融通有効電力Ｐｃに対応して、三相／二相変換変圧器１のＴ座側から有効電力Ｐｍの最大１／２の出し入れ制御を行うようにＴ座インバータ７を制御する。具体的には、列車負荷２が力行状態ならば有効電力ＰｍをＴ座側から取り込むように制御し、列車負荷２が回生状態ならば有効電力ＰｍをＴ座側に戻すように制御する。 (Control of active power interchange operation)
The second inverter active power control means (accommodation active power calculation means 11 + T seat inverter gate control means 14) corresponds to the output interchangeable power Pc from the T seat side of the three-phase / two-phase conversion transformer 1. The T-seat inverter 7 is controlled so as to perform the maximum and half control of the active power Pm. Specifically, if the train load 2 is in a power running state, control is performed so that the active power Pm is taken from the T seat side, and if the train load 2 is in a regenerative state, control is performed so that the active power Pm is returned to the T seat side.

（無効電力補償動作の制御）
上記第２のインバータ無効電力制御手段（Ｔ座側無効電力補償用算出手段１２＋Ｔ座インバータゲート制御手段１４）は、負荷検出手段９の無効電力Ｑｍと補償用無効電力ＱＲｍとの差分を取り、「Ｑｍ−ＱＲｍ＞０」の場合、この差分（Ｑｍ−ＱＲｍ）に基づき、Ｍ座インバータ６から出力する補償用無効電力ＱＲｍの位相と正反対となる逆方向の補償用無効電力ＱＲｔ（（Ｑｍ−ＱＲｍ）に最も近い値）を出力するようにＴ座インバータ７を制御する。一方、「Ｑｍ−ＱＲｍ≦０」の場合、無効電力補償動作は行わないようにＴ座インバータ７を制御する。なお、補償用無効電力ＱＲｍはＭ座インバータ６の補償用無効電力ＱＲｍの最大値制限が予め認知可能であれば、Ｔ座側無効電力補償用算出手段１２単独で無効電力Ｑｍに基づき求めることができる。また、Ｔ座側無効電力補償用算出手段１２が補償用無効電力ＱＲｍの最大値制限を予め認知していない場合はＭ座側無効電力補償用算出手段１０より出力される補償用無効電力ＱＲｍを取り込むことにより、補償用無効電力ＱＲｍを認識することができる。 (Control of reactive power compensation operation)
The second inverter reactive power control means (T seat side reactive power compensation calculating means 12 + T seat inverter gate control means 14) takes the difference between the reactive power Qm of the load detecting means 9 and the reactive power QRm for compensation, In the case of “Qm−QRm> 0”, based on this difference (Qm−QRm), the compensation reactive power QRt ((Qm−QRm) in the opposite direction is opposite to the phase of the compensation reactive power QRm output from the M-seat inverter 6. The T-seat inverter 7 is controlled so as to output a value closest to). On the other hand, in the case of “Qm−QRm ≦ 0”, the T-seat inverter 7 is controlled so as not to perform the reactive power compensation operation. If the maximum value limit of the compensation reactive power QRm of the M-seat inverter 6 can be recognized in advance, the compensation reactive power QRm can be obtained based on the reactive power Qm by the T seat side reactive power compensation calculation unit 12 alone. it can. If the T seat side reactive power compensation calculation means 12 does not recognize the maximum value limit of the compensation reactive power QRm in advance, the compensation reactive power QRm output from the M seat side reactive power compensation calculation means 10 is calculated. By taking in, the compensation reactive power QRm can be recognized.

なお、Ｔ座インバータ７における融通有効電力Ｐｃと補償用無効電力ＱＲｔの最大値は、電流耐量以内の出力に制限するリミッタ制限手段によりＴ座インバータ７を構成する容量によって予め制限されている。   Note that the maximum values of the interchangeable active power Pc and the compensation reactive power QRt in the T-seat inverter 7 are limited in advance by the capacity of the T-seat inverter 7 by limiter limiting means that limits the output to within the current withstand capability.

（無効電力補償動作の制御方法）
実施の形態１の制御装置１９における上記第１及び第２のインバータ無効電力制御手段による無効電力補償制御方法をまとめる以下のステップ(a) 〜(c) を実行することなる。 (Control method for reactive power compensation operation)
The following steps (a) to (c) for summarizing the reactive power compensation control method by the first and second inverter reactive power control means in the control device 19 of the first embodiment are executed.

ステップ(a)は、 列車負荷２に電力供給を行っている第１のき電線であるＭ座側き電線１８ｍの無効電力Ｑｍを取得する。   Step (a) acquires the reactive power Qm of the M seat side feeder 18m, which is the first feeder that supplies power to the train load 2.

ステップ(b)は、 無効電力Ｑｍに基づき、補償用無効電力ＱＲｍを算出し、該補償用無効電力ＱＲｍによってＭ座側き電線１８ｍの無効電力がゼロに近づくように、Ｍ座インバータ６制御する。   Step (b) calculates a compensation reactive power QRm based on the reactive power Qm, and controls the M seat inverter 6 so that the reactive power of the M seat side feeder 18m approaches zero by the compensation reactive power QRm. .

ステップ(c)は、無効電力Ｑｍ及び補償用無効電力ＱＲｍに基づき、補償用無効電力ＱＲｍによって無効電力Ｑｍを完全に補償できない場合（Ｑｍ−ＱＲｍ＞０）、第２の補償用無効電力である補償用無効電力ＱＲｔを算出し、補償用無効電力ＱＲｔによってＴ座側き電線１８ｔに無効電力が発生するように、Ｔ座インバータ７の無効電力補償動作を制御する。   Step (c) is the second compensation reactive power when the reactive power Qm cannot be completely compensated by the compensation reactive power QRm based on the reactive power Qm and the compensation reactive power QRm (Qm−QRm> 0). The compensation reactive power QRt is calculated, and the reactive power compensation operation of the T seat inverter 7 is controlled so that the reactive power is generated in the T seat side feeder 18t by the compensation reactive power QRt.

（効果等）
上述した実施の形態１の電圧変動補償装置用の制御装置１９における第２のインバータ無効電力制御手段（Ｔ座側無効電力補償用算出手段１２＋Ｔ座インバータゲート制御手段１４）は、上記ステップ(c) において、補償用無効電力ＱＲｍによって無効電力Ｑｍを完全に補償できない場合でも、列車負荷２に電力供給を行っていないＴ座側き電線１８ｔに対し、補償用無効電力ＱＲｔによってＴ座側き電線１８ｔに無効電力を発生させるように、Ｔ座インバータ７の無効電力補償動作を制御している。 (Effects etc.)
The second inverter reactive power control means (T-seat side reactive power compensation calculation means 12 + T-seat inverter gate control means 14) in the control device 19 for the voltage fluctuation compensator of the first embodiment described above is the above step (c). Even if the reactive power Qm cannot be completely compensated for by the compensation reactive power QRm, the T seat side feeder 18t is compensated by the compensation reactive power QRt for the T seat side feeder 18t that is not supplying power to the train load 2. The reactive power compensation operation of the T-seat inverter 7 is controlled so that reactive power is generated in the inverter.

その結果、補償用無効電力ＱＲｍ及び補償用無効電力ＱＲｔによって無効電力補償動作を行うことができるため、電気鉄道用三相／二相変換変圧器における三相電源側の三相不平衡をより一層改善させることができる効果を奏する。この効果に伴い、列車負荷２への電力給電効率を向上させて電気鉄道用電力給電システムにおける電力の省エネルギー化を図ることができる。   As a result, the reactive power compensation operation can be performed by the compensating reactive power QRm and the compensating reactive power QRt, so that the three-phase unbalance on the three-phase power supply side in the three-phase / two-phase conversion transformer for electric railway is further reduced. There is an effect that can be improved. With this effect, it is possible to improve the power supply efficiency to the train load 2 and to save power in the electric power supply system for electric railways.

すなわち、実施の形態１の電気鉄道用電圧変動補償装置の制御装置１９による制御方法によれば、電気鉄道用電力給電システムがＭ座電力のみを用いる同相き電あるいは片座き電において、系統の電圧品質改善（電圧変動、電圧不平衡、電流不平衡）を目的に、電圧変動補償装置３を導入した時、Ｍ座インバータ６から補償しきれない無効電力をＴ座インバータ７から無効電力補償することができる。このため、さらに電圧品質改善が行える効果を奏する。特に、新幹線等の列車負荷２におけるセクション切替設備を不要にする同相き電について上記効果の度合が大きい。   That is, according to the control method by the control device 19 of the electric railway voltage fluctuation compensator according to the first embodiment, the electric power supply system for electric railways can be used for in-phase power or single-seat power using only M seat power. When the voltage fluctuation compensator 3 is introduced for the purpose of voltage quality improvement (voltage fluctuation, voltage imbalance, current imbalance), the reactive power that cannot be compensated for by the M seat inverter 6 is compensated for by the T seat inverter 7. be able to. As a result, the voltage quality can be further improved. In particular, the degree of the above effect is large with respect to common-mode power that eliminates the need for section switching equipment in the train load 2 such as the Shinkansen.

また、実施の形態１の制御装置１９の制御対象である電圧変動補償装置３の設備自体は従来設備構成と変わらないため、保守点検や系統事故に対して、電気鉄道用電力給電システムの片座き電あるいは同相き電を両座き電に切り替える場合においても、制御装置１９の制御内容を従来の両座き電用に変更するだけで可能となる。   Further, since the equipment itself of the voltage fluctuation compensator 3 to be controlled by the control device 19 of the first embodiment is the same as that of the conventional equipment configuration, one seat of the electric power feeding system for electric railways can be used for maintenance and system faults. Even when the feeding or in-phase feeding is switched to the both sitting electricity, it is possible only by changing the control content of the control device 19 to the conventional both sitting electricity.

図３はこの発明の実施の形態１である電気鉄道用電圧変動補償装置の制御装置の効果をシミュレーションした結果を示す説明図である。同図の(a) に示すような送電線を含む三相電源４５、スコット結線変圧器４６、及びＲＰＣ装置４７から構成される片座き電の電力供給の系統に、トロリー線４９を介してレール５０上を走行する列車負荷３８を与えた場合のＲＰＣ装置４７を制御対象としたシミュレーションした結果を同図の(b) に示している。   FIG. 3 is an explanatory diagram showing the result of simulating the effect of the control device of the electric railway voltage fluctuation compensation device according to the first embodiment of the present invention. A single-seat power supply system comprising a three-phase power supply 45 including a transmission line, a Scott connection transformer 46, and an RPC device 47 as shown in FIG. (B) of the same figure shows the result of the simulation in which the RPC device 47 is controlled when the train load 38 traveling on the rail 50 is given.

図３の(b) において、横軸をＲＰＣ容量、縦軸を三相の電圧不平衡率として、特許文献１等で用いられる従来の制御方式のシミュレーション結果Ｌ０と、本実施の形態１の制御装置１９による制御方式のシミュレーション結果Ｌ１とを示している。   In FIG. 3B, with the RPC capacity on the horizontal axis and the three-phase voltage unbalance rate on the vertical axis, the simulation result L0 of the conventional control method used in Patent Document 1 and the control of the first embodiment is used. The simulation result L1 of the control method by the apparatus 19 is shown.

図３の(b) のシミュレーション結果から、実施の形態１の制御方式は従来の制御方式よりも、電圧不平衡率を軽減させていることがわかる。   From the simulation result of FIG. 3B, it can be seen that the control method of the first embodiment reduces the voltage imbalance rate more than the conventional control method.

＜実施の形態２＞
図４はこの発明の実施の形態２である電気鉄道用電圧変動補償装置の制御装置の制御対象である電気鉄道用電圧変動補償装置を用いた電気鉄道用電力給電システムの構成を模式的に示す説明図である。同図において、電圧変動補償装置２３を備えた同相き電もしくは片座き電における電気鉄道用電力給電システムを示している。 <Embodiment 2>
FIG. 4 schematically shows the configuration of an electric railway power supply system using the electric railway voltage fluctuation compensator that is the control target of the electric railway voltage fluctuation compensator controller according to the second embodiment of the present invention. It is explanatory drawing. In the same figure, the electric power supply system for electric railways in the in-phase power supply or the one-seat power supply provided with the voltage fluctuation compensating device 23 is shown.

同図において、三相／二相変換変圧器２１は電気鉄道用であるスコット結線変圧器や変形ウッド結線変圧器を含む三相／二相変換変圧器である。三相／二相変換変圧器２１により三相／二相変換されたＴ座電力（第１の単相交流電力）及びＭ座電力（第２の単相交流電圧）がＴ座側き電線３８ｔ及びＭ座側き電線３８ｍ（第１及び第２のき電線）より得られる。Ｔ座電力が供給されるＴ座側き電線３８ｔ（第１のき電線）にトロリー線３５を介してレール３６上を走行する列車負荷２２が接続される。   In the figure, a three-phase / two-phase conversion transformer 21 is a three-phase / two-phase conversion transformer including a Scott connection transformer and a modified Wood connection transformer for electric railways. T-seat power (first single-phase AC power) and M-seat power (second single-phase AC voltage), which are three-phase / two-phase converted by the three-phase / two-phase conversion transformer 21, are converted into T-seat side feeders 38t. And the M seat side feeder 38m (first and second feeders). A train load 22 traveling on the rail 36 is connected via a trolley wire 35 to a T seat side feeder 38t (first feeder) to which T seat power is supplied.

三相／二相変換変圧器２１のＴ座側き電線３８ｔ及びＭ座側き電線３８ｍ（第２のき電線）に電圧変動補償装置２３が接続される。電圧変動補償装置２３内においてＴ座側単相変圧器２５は三相／二相変換変圧器２１のＴ座側き電線３８ｔに接続され、Ｍ座側単相変圧器２４は三相／二相変換変圧器２１のＭ座側き電線３８ｍに接続される。   The voltage fluctuation compensating device 23 is connected to the T seat side feeder 38t and the M seat side feeder 38m (second feeder) of the three-phase / two-phase conversion transformer 21. In the voltage fluctuation compensation device 23, the T-seat side single-phase transformer 25 is connected to the T-seat side feeder 38t of the three-phase / two-phase conversion transformer 21, and the M-seat side single-phase transformer 24 is a three-phase / two-phase transformer. It is connected to the M seat side feeder 38m of the conversion transformer 21.

Ｍ座側単相変圧器２４，Ｔ座側単相変圧器２５間は、Ｍ座側単相変圧器２４からＴ座側単相変圧器２５にかけてＭ座インバータ２６（第２のインバータ）、直流コンデンサ３７及びＴ座インバータ２７（第１のインバータ）を介して接続される。なお、Ｔ座インバータ２７は交流側がＴ座側単相変圧器２５と接続され、Ｍ座インバータ２６は交流側がＭ座側単相変圧器２４と接続され、Ｔ座インバータ２７，Ｍ座インバータ２６それぞれの直流側が直流コンデンサ３７を介して接続される。また、三相／二相変換変圧器２１、Ｍ座側単相変圧器２４、Ｔ座側単相変圧器２５、Ｍ座インバータ２６及びＴ座インバータ２７それぞれの具体的な構成は、本発明と直接関係がないため説明を省略する。   Between the M-seat-side single-phase transformer 24 and the T-seat-side single-phase transformer 25, the M-seat inverter 26 (second inverter) and DC are connected from the M-seat-side single-phase transformer 24 to the T-seat-side single-phase transformer 25. The capacitor 37 and the T seat inverter 27 (first inverter) are connected. The T seat inverter 27 is connected to the T seat side single phase transformer 25 on the AC side, and the M seat inverter 26 is connected to the M seat side single phase transformer 24 on the AC side. Are connected via a DC capacitor 37. The specific configurations of the three-phase / two-phase conversion transformer 21, the M-seat side single-phase transformer 24, the T-seat side single-phase transformer 25, the M-seat inverter 26, and the T-seat inverter 27 are the same as the present invention. Description is omitted because there is no direct relationship.

このような構成の電圧変動補償装置２３が実施の形態２の電気鉄道用電圧変動補償装置の制御装置３９の制御対象となる。   The voltage fluctuation compensator 23 having such a configuration is a control target of the controller 39 of the electric railway voltage fluctuation compensator of the second embodiment.

図５はこの発明の実施の形態２である電気鉄道用電圧変動補償装置の制御装置３９の構成を示すブロック図である。   FIG. 5 is a block diagram showing a configuration of a control device 39 of the electric railway voltage fluctuation compensating device according to the second embodiment of the present invention.

図５で示すように、電圧変動補償装置２３の制御装置３９は、負荷検出手段２９、Ｍ座側無効電力補償用算出手段３０、融通有効電力用算出手段３１、Ｔ座側無効電力補償用算出手段３２、Ｍ座インバータゲート制御手段３３及びＴ座インバータゲート制御手段３４から構成されている。   As shown in FIG. 5, the control device 39 of the voltage fluctuation compensation device 23 includes a load detection means 29, an M seat side reactive power compensation calculation means 30, a flexible active power calculation means 31, and a T seat side reactive power compensation calculation. It comprises means 32, M seat inverter gate control means 33 and T seat inverter gate control means 34.

負荷検出手段２９は、三相／二相変換変圧器２１のＴ座側き電線３８ｔにおけるＴ座側負荷２８の有効電力Ｐｔ及び無効電力Ｑｔを検出する。   The load detection means 29 detects the active power Pt and the reactive power Qt of the T seat side load 28 in the T seat side feeder 38 t of the three-phase / two-phase conversion transformer 21.

Ｔ座側無効電力補償用算出手段３２は負荷検出手段２９より得た無効電力Ｑｔに基づき補償用無効電力ＱＲｔ（第１の補償用無効電力）を算出する。Ｔ座インバータゲート制御手段３４は補償用無効電力ＱＲｔに基づきＴ座インバータ２７による無効電力補償動作を（ゲート）制御する。すなわち、Ｔ座側無効電力補償用算出手段３２及びＴ座インバータゲート制御手段３４によりＴ座インバータ２７の無効電力補償動作を制御する第１のインバータ無効電力制御手段を構成する。   The T-seat side reactive power compensation calculating means 32 calculates a compensation reactive power QRt (first compensation reactive power) based on the reactive power Qt obtained from the load detecting means 29. The T-seat inverter gate control means 34 (gate) controls the reactive power compensation operation by the T-seat inverter 27 based on the compensation reactive power QRt. That is, the T seat side reactive power compensation calculating means 32 and the T seat inverter gate control means 34 constitute first inverter reactive power control means for controlling the reactive power compensation operation of the T seat inverter 27.

Ｍ座側無効電力補償用算出手段３０は無効電力Ｑｔ及び補償用無効電力ＱＲｔに基づき補償用無効電力ＱＲｍ（第２の補償用無効電力）を算出する。Ｍ座インバータゲート制御手段３３は補償用無効電力ＱＲｍに基づきＭ座インバータ２６の無効電力補償動作を（ゲート）制御する。すなわち、Ｍ座側無効電力補償用算出手段３０及びＭ座インバータゲート制御手段３３によりＭ座インバータ２６の無効電力補償動作を制御する第２のインバータ無効電力制御手段を構成する。   The M seat side reactive power compensation calculation means 30 calculates a compensation reactive power QRm (second compensation reactive power) based on the reactive power Qt and the compensation reactive power QRt. The M seat inverter gate control means 33 (gate) controls the reactive power compensation operation of the M seat inverter 26 based on the compensation reactive power QRm. That is, the M seat side reactive power compensation calculating means 30 and the M seat inverter gate control means 33 constitute second inverter reactive power control means for controlling the reactive power compensation operation of the M seat inverter 26.

融通有効電力用算出手段３１は負荷検出手段２９より得た有効電力Ｐｔに基づき融通有効電力Ｐｃを算出する。Ｔ座インバータゲート制御手段３４及びＭ座インバータゲート制御手段３３は融通有効電力Ｐｃに基づきＴ座インバータ２７及びＭ座インバータ２６の有効電力融通動作を制御する。すなわち、融通有効電力用算出手段３１及びＴ座インバータゲート制御手段３４によりＴ座インバータ２７に対し有効電力融通動作を制御する第１のインバータ有効電力制御手段を構成し、融通有効電力用算出手段３１及びＭ座インバータゲート制御手段３３によりＭ座インバータ２６に対し有効電力融通動作を制御する第２のインバータ有効電力制御手段を構成する。   The flexible active power calculation means 31 calculates the flexible active power Pc based on the active power Pt obtained from the load detection means 29. The T seat inverter gate control means 34 and the M seat inverter gate control means 33 control the active power accommodation operation of the T seat inverter 27 and the M seat inverter 26 based on the accommodation active power Pc. That is, a first inverter active power control means for controlling the active power accommodation operation for the T seat inverter 27 is constituted by the accommodation active power calculation means 31 and the T seat inverter gate control means 34, and the accommodation active power calculation means 31. And the second inverter active power control means for controlling the active power interchange operation for the M seat inverter 26 by the M seat inverter gate control means 33.

なお、Ｍ座インバータ２６及びＴ座インバータ２７は、それぞれ決められた電流耐量以内の出力に制限するリミッタ制限手段を備えている。   Each of the M-seat inverter 26 and the T-seat inverter 27 includes limiter limiting means for limiting the output to a value within the determined current withstand capability.

以上のように構成された電圧変動補償装置２３の制御装置３９における制御方法を説明する。実施の形態２の制御装置３９は、Ｔ座側負荷２８であるＴ座側き電線３８ｔの有効電力Ｐｔ、無効電力Ｑｔを負荷検出手段２９により検出して、以下の制御を行う。   A control method in the control device 39 of the voltage fluctuation compensation device 23 configured as described above will be described. The control device 39 according to the second embodiment detects the effective power Pt and reactive power Qt of the T seat side feeder 38t, which is the T seat side load 28, by the load detection means 29, and performs the following control.

（１）列車負荷２２側のき電母線（第１のき電線）であるＴ座側き電線３８ｔに接続したＴ座インバータ２７（第１のインバータ）は以下のように制御される。   (1) The T-seat inverter 27 (first inverter) connected to the T-seat side feeder 38t that is a feeder line (first feeder) on the train load 22 side is controlled as follows.

（有効電力融通動作の制御）
上記第１のインバータ有効電力制御手段（融通有効電力用算出手段３１＋Ｔ座インバータゲート制御手段３４）は、Ｔ座側き電線３８ｔの有効電力Ｐｔの１／２を最大分担する融通有効電力Ｐｃを出力するようにＴ座インバータ２７を制御する。なお、残りの有効電力（Ｐｍ−Ｐｃ）は三相／二相変換変圧器２１のＴ座（Ｔ座側き電線３８ｔ）から供給するようにする。 (Control of active power interchange operation)
The first inverter active power control means (accommodation active power calculation means 31 + T seat inverter gate control means 34) outputs the accommodation active power Pc that makes the largest share of 1/2 of the active power Pt of the T seat side feeder 38t. Thus, the T-seat inverter 27 is controlled. The remaining active power (Pm−Pc) is supplied from the T seat (T seat side feeder 38t) of the three-phase / two-phase conversion transformer 21.

（無効電力補償動作の制御）
上記第１のインバータ無効電力制御手段（Ｔ座側無効電力補償用算出手段３２＋Ｔ座インバータゲート制御手段３４）は、Ｔ座側き電線３８ｔの無効電力Ｑｔを最大補償する補償用無効電力ＱＲｔを出力するようにＴ座インバータ２７を制御する。 (Control of reactive power compensation operation)
The first inverter reactive power control means (T-seat side reactive power compensation calculating means 32 + T-seat inverter gate control means 34) outputs a compensation reactive power QRt for maximum compensation of the reactive power Qt of the T-seat side feeder 38t. Thus, the T-seat inverter 27 is controlled.

なお、Ｔ座インバータ２７における融通有効電力Ｐｃと補償用無効電力ＱＲｔの最大値は、電流耐量以内の出力に制限するリミッタ制限手段によりＴ座インバータ２７を構成する容量によって予め制限されている。したがって、「ＱＲｍ＝Ｑｍ」とするのが理想であるが、上述した補償用無効電力ＱＲｔの最大値の制限により、「ＱＲｍ＝Ｑｍ」を実現できない場合がある。   Note that the maximum values of the interchangeable active power Pc and the compensation reactive power QRt in the T-seat inverter 27 are limited in advance by the capacity constituting the T-seat inverter 27 by limiter limiting means that limits the output to within the current withstand capability. Therefore, it is ideal to set “QRm = Qm”, but “QRm = Qm” may not be realized due to the limitation on the maximum value of the compensation reactive power QRt described above.

（２）三相／二相変換変圧器２１のＭ座側（Ｍ座側き電線３８ｍ：第２のき電線）に接続したＭ座インバータ２６は以下のように制御される。   (2) The M seat inverter 26 connected to the M seat side (M seat side feeder 38m: second feeder) of the three-phase / two-phase conversion transformer 21 is controlled as follows.

（有効電力融通動作の制御）
上記第２のインバータ有効電力制御手段（融通有効電力用算出手段３１＋Ｍ座インバータゲート制御手段３３）は出力する融通有効電力Ｐｃに対応して、三相／二相変換変圧器２１のＭ座側から有効電力Ｐｔの最大１／２の出し入れ制御を行うようにＭ座インバータ２６を制御する。具体的には、列車負荷２２が力行状態ならば有効電力ＰｔをＭ座側から取り込むように制御し、列車負荷２２が回生状態ならば有効電力ＰｔをＭ座側に戻すように制御する。 (Control of active power interchange operation)
The second inverter active power control means (accommodation active power calculation means 31 + M seat inverter gate control means 33) corresponds to the output interchangeable power Pc from the M seat side of the three-phase / two-phase conversion transformer 21. The M-seat inverter 26 is controlled so as to perform a control of taking in and out the maximum half of the active power Pt. Specifically, if the train load 22 is in a power running state, control is performed so that the active power Pt is taken from the M seat side, and if the train load 22 is in a regenerative state, control is performed so that the active power Pt is returned to the M seat side.

（無効電力補償動作の制御）
上記第２のインバータ無効電力制御手段（Ｍ座側無効電力補償用算出手段３０＋Ｍ座インバータゲート制御手段３３）は、負荷検出手段２９の無効電力Ｑｔと補償用無効電力ＱＲｔとの差分を取り、「Ｑｔ−ＱＲｔ＞０」の場合、この差分（Ｑｔ−ＱＲｔ）に基づき、Ｔ座インバータ２７から出力する補償用無効電力ＱＲｔの位相と正反対となる逆方向の補償用無効電力ＱＲｍ（（Ｑｔ−ＱＲｔ）に最も近い値）を出力するようにＭ座インバータ２６を制御する。一方、「Ｑｔ−ＱＲｔ≦０」の場合、無効電力補償動作は行わないようにＭ座インバータ２６を制御する。なお、補償用無効電力ＱＲｔはＴ座インバータ２７の補償用無効電力ＱＲｔの最大値制限が予め認知可能であれば、Ｍ座側無効電力補償用算出手段３０単独で無効電力Ｑｔに基づき求めることができる。また、Ｍ座側無効電力補償用算出手段３０が補償用無効電力ＱＲｔの最大値制限を予め認知していない場合はＴ座側無効電力補償用算出手段３２より出力される補償用無効電力ＱＲｔを取り込むことにより、補償用無効電力ＱＲｔを認識することができる。 (Control of reactive power compensation operation)
The second inverter reactive power control means (M seat reactive power compensation calculation means 30 + M seat inverter gate control means 33) takes the difference between the reactive power Qt of the load detection means 29 and the compensation reactive power QRt, In the case of “Qt−QRt> 0”, based on this difference (Qt−QRt), the compensation reactive power QRm ((Qt−QRt) in the opposite direction that is opposite to the phase of the compensation reactive power QRt output from the T-seat inverter 27. The M-seat inverter 26 is controlled so as to output the value closest to. On the other hand, in the case of “Qt−QRt ≦ 0”, the M seat inverter 26 is controlled not to perform the reactive power compensation operation. The compensation reactive power QRt can be obtained based on the reactive power Qt by the M seat side reactive power compensation calculating means 30 alone if the maximum value limit of the compensation reactive power QRt of the T seat inverter 27 can be recognized in advance. it can. When the M seat side reactive power compensation calculation means 30 does not recognize the maximum value limit of the compensation reactive power QRt in advance, the compensation reactive power QRt output from the T seat side reactive power compensation calculation means 32 is used. By taking in, the compensation reactive power QRt can be recognized.

なお、Ｍ座インバータ２６における融通有効電力Ｐｃと補償用無効電力ＱＲｍの最大値は、電流耐量以内の出力に制限するリミッタ制限手段によりＭ座インバータ２６を構成する容量によって予め制限されている。   Note that the maximum values of the interchangeable active power Pc and the compensation reactive power QRm in the M seat inverter 26 are limited in advance by the capacity constituting the M seat inverter 26 by limiter limiting means for limiting the output to within the current withstand capability.

（無効電力補償動作の制御方法）
実施の形態２の制御装置３９における上記第１及び第２のインバータ無効電力制御手段による無効電力補償制御方法をまとめる以下のステップ(a) 〜(c) を実行することなる。 (Control method for reactive power compensation operation)
The following steps (a) to (c) for summarizing the reactive power compensation control method by the first and second inverter reactive power control means in the control device 39 of the second embodiment are executed.

ステップ(a)は、 列車負荷２２に電力供給を行っている第１のき電線であるＴ座側き電線３８ｔの無効電力Ｑｔを取得する。   Step (a) acquires the reactive power Qt of the T seat side feeder 38t, which is the first feeder that supplies power to the train load 22.

ステップ(b)は、 無効電力Ｑｔに基づき、補償用無効電力ＱＲｔを算出し、該補償用無効電力ＱＲｔによってＴ座側き電線３８ｔの無効電力がゼロに近づくように、Ｔ座インバータ２７制御する。   Step (b) calculates the compensation reactive power QRt based on the reactive power Qt, and controls the T-seat inverter 27 so that the reactive power of the T-seat side feeder 38t approaches zero by the compensation reactive power QRt. .

ステップ(c)は、無効電力Ｑｔ及び補償用無効電力ＱＲｔに基づき、補償用無効電力ＱＲｔによって無効電力Ｑｔを完全に補償できない場合（Ｑｔ−ＱＲｔ＞０）、第２の補償用無効電力である補償用無効電力ＱＲｍを算出し、補償用無効電力ＱＲｍによってＭ座側き電線３８ｍに無効電力が発生するように、Ｍ座インバータ２６の無効電力補償動作を制御する。   Step (c) is a second reactive reactive power when the reactive power Qt cannot be completely compensated by the reactive power QRt based on the reactive power Qt and the reactive power QRt (Qt−QRt> 0). The compensation reactive power QRm is calculated, and the reactive power compensation operation of the M seat inverter 26 is controlled so that the reactive power is generated in the M seat side feeder 38m by the compensation reactive power QRm.

（効果等）
上述した実施の形態２の電圧変動補償装置用の制御装置３９における第２のインバータ無効電力制御手段（Ｍ座側無効電力補償用算出手段３０＋Ｍ座インバータゲート制御手段３３）は、上記ステップ(c) において、補償用無効電力ＱＲｔによって無効電力Ｑｔを完全に補償できない場合でも、列車負荷２２に電力供給を行っていないＭ座側き電線３８ｍに対し、補償用無効電力ＱＲｍによってＭ座側き電線３８ｍに無効電力を発生させるように、Ｍ座インバータ２６の無効電力補償動作を制御している。 (Effects etc.)
The second inverter reactive power control means (M-seat side reactive power compensation calculating means 30 + M-seat inverter gate control means 33) in the control device 39 for the voltage fluctuation compensator of the second embodiment described above is the above step (c). Even if the reactive power Qt cannot be completely compensated by the compensation reactive power QRt, the M seat side feeder 38m is compensated by the compensation reactive power QRm for the M seat side feeder 38m that is not supplying power to the train load 22. The reactive power compensation operation of the M-seat inverter 26 is controlled so that reactive power is generated in the inverter.

その結果、補償用無効電力ＱＲｔ及び補償用無効電力ＱＲｍによって無効電力補償動作を行うことができるため、電気鉄道用三相／二相変換変圧器における三相電源側の三相不平衡をより一層改善させることができる効果を奏する。この効果に伴い、列車負荷２２への電力給電効率を向上させて電気鉄道用電力給電システムにおける電力の省エネルギー化を図ることができる。   As a result, since the reactive power compensation operation can be performed by the compensation reactive power QRt and the compensation reactive power QRm, the three-phase unbalance on the three-phase power supply side in the three-phase / two-phase conversion transformer for electric railway is further reduced. There is an effect that can be improved. With this effect, it is possible to improve the power supply efficiency to the train load 22 and to save energy in the electric power supply system for electric railways.

すなわち、実施の形態２の電気鉄道用電圧変動補償装置の制御装置３９による制御方法によれば、電気鉄道用電力給電システムがＴ座電力のみを用いる同相き電あるいは片座き電において、系統の電圧品質改善（電圧変動、電圧不平衡、電流不平衡）を目的に、電圧変動補償装置２３を導入した時、Ｔ座インバータ２７から補償しきれない無効電力をＭ座インバータ２６から無効電力補償することができる。このため、さらに電圧品質改善が行える効果を奏する。特に、新幹線等の列車負荷２２におけるセクション切替設備を不要にする同相き電について上記効果の度合が大きい。   That is, according to the control method by the control device 39 of the electric railway voltage fluctuation compensator according to the second embodiment, the electric power supply system for the electric railway uses the T-seat power only, When the voltage fluctuation compensator 23 is introduced for the purpose of improving the voltage quality (voltage fluctuation, voltage imbalance, current imbalance), the reactive power that cannot be compensated for by the T seat inverter 27 is compensated for by the M seat inverter 26. be able to. As a result, the voltage quality can be further improved. In particular, the degree of the above effect is large with respect to in-phase power that eliminates the need for section switching equipment in the train load 22 such as the Shinkansen.

また、実施の形態２の制御装置３９の制御対象である電圧変動補償装置２３の設備自体は従来設備構成と変わらないため、保守点検や系統事故に対して、電気鉄道用電力給電システムの片座き電あるいは同相き電を両座き電に切り替える場合においても、制御装置３９の制御内容を従来の両座き電用に変更するだけで可能となる。   In addition, since the equipment itself of the voltage fluctuation compensator 23 to be controlled by the control device 39 according to the second embodiment is not different from the conventional equipment configuration, a single seat of the electric power supply system for electric railways can be used for maintenance inspections and system faults. Even when the feeding or in-phase feeding is switched to both sitting electricity, the control content of the control device 39 can be changed only to the conventional both sitting electricity.

（その他）
なお、実施の形態１及び実施の形態２で述べた制御装置１９（３９）の少なくとも一部は、例えば、主記憶装置、演算装置、入力装置、二次記憶装置及び出力装置等から構成され、これらの装置が例えば共通バスを介して共通に接続されるような構成のコンピュータ装置により実現することができる。 (Other)
Note that at least a part of the control device 19 (39) described in the first and second embodiments includes, for example, a main storage device, an arithmetic device, an input device, a secondary storage device, and an output device. For example, these devices can be realized by a computer device configured to be commonly connected via a common bus.

このようなコンピュータ装置において、少なくとも実施の形態１の手段１０〜１４（実施の形態２の手段３０〜３４）あるいは実施の形態１のステップ(a) 〜(c)（ 実施の形態２のステップ(a) 〜(c)）の処理は、例えば、演算装置がコンピュータを機能させるプログラムに基づき動作することによって実現可能である。また、上記プログラムは主記憶装置あるいは二次記憶装置に格納可能である。   In such a computer apparatus, at least the means 10 to 14 of the first embodiment (the means 30 to 34 of the second embodiment) or the steps (a) to (c) of the first embodiment (the steps of the second embodiment ( The processing of a) to (c)) can be realized, for example, when the arithmetic device operates based on a program that causes a computer to function. The program can be stored in a main storage device or a secondary storage device.

また、電気鉄道用電力給電システムにおける隣接変電所のき電区間のＭ座もしくはＴ座に適合させて実施の形態１の制御装置１９あるいは実施の形態２の制御装置３９を設けることにより、より長いき電区間において電圧変動補償装置３（２３）に対する良好な無効電力補償を効率的に行うことができる。   Further, by providing the control device 19 according to the first embodiment or the control device 39 according to the second embodiment so as to be adapted to the M seat or the T seat in the feeding section of the adjacent substation in the electric power supply system for electric railway, it is possible to increase the length. Good reactive power compensation for the voltage fluctuation compensator 3 (23) can be efficiently performed in the live power section.

１，２１ 三相／二相変換変圧器、２，２２ 列車負荷、３，２３ （電気鉄道用）電圧変動補償装置、４，２４ Ｍ座側単相変圧器、５，２５ Ｔ座側単相変圧器、６，２６ Ｍ座インバータ、７，２７ Ｔ座インバータ、８ Ｍ座側負荷、９，２９ 負荷検出手段、１０，３０ Ｍ座側無効電力補償用算出手段、１１，３１ 融通有効電力用算出手段、１２，３２ Ｔ座側無効電力補償用算出手段、１３，３３ Ｍ座インバータゲート制御手段、１４，３４ Ｔ座インバータゲート制御手段。   1,21 Three-phase / two-phase conversion transformer, 2,22 Train load, 3,23 (For electric railway) Voltage fluctuation compensation device, 4,24 M-seat side single-phase transformer, 5,25 T-seat side single phase Transformer, 6, 26 M seat inverter, 7, 27 T seat inverter, 8 M seat side load, 9, 29 Load detection means, 10, 30 M seat side reactive power compensation calculation means, 11, 31 For interchangeable active power Calculation means, 12, 32 T seat side reactive power compensation calculation means, 13, 33 M seat inverter gate control means, 14, 34 T seat inverter gate control means.

Claims (6)

電気鉄道用の電圧変動補償装置を制御する電圧変動補償装置の制御装置であって、前記電圧変動補償装置は、電気鉄道用三相／二相変換変圧器により第１及び第２のき電線から供給される第１及び第２の単相交流電力のうち、前記第１の単相交流電力を前記第１のき電線を介して電車負荷に供給する電気鉄道用電力給電システムにおける有効電力及び無効電力を、前記第１及び第２のき電線に接続される第１及び第２のインバータを用いて補償し、
前記第１のき電線の無効電力を少なくとも検出する負荷検出手段と、
前記無効電力に基づき、前記第１のき電線の無効電力を補償するための第１の補償用無効電力を算出し、該第１の補償用無効電力によって前記第１のき電線の無効電力がゼロに近づくように、前記第１のインバータを制御する第１のインバータ無効電力制御手段とを備え、前記第１のインバータにおける前記第１の補償用無効電力の最大値が、電流耐量以内の出力に制限するリミッタ制限手段により前記第１のインバータを構成する容量によって予め制限されており、
前記第１の補償用無効電力によって前記無効電力を完全に補償できない場合、前記無効電力及び前記第１の補償用無効電力間の差分値に基づき前記第１の補償用無効電力の位相と正反対となる逆方向の位相を有する第２の補償用無効電力を算出し、前記第２の補償用無効電力によって前記第２のき電線に無効電力を発生させるように、前記第２のインバータを制御する第２のインバータ無効電力制御手段をさらに備える、
電気鉄道用電圧変動補償装置の制御装置。 A voltage fluctuation compensator for controlling a voltage fluctuation compensator for electric railway, wherein the voltage fluctuation compensator is connected to the first and second feeder lines by a three-phase / two-phase conversion transformer for electric railway. Of the supplied first and second single-phase AC power, active power and invalidity in the electric railway power supply system that supplies the first single-phase AC power to the train load via the first feeder. Compensating power using first and second inverters connected to the first and second feeders,
Load detecting means for detecting at least reactive power of the first feeder line;
Based on the reactive power, a first compensating reactive power for compensating the reactive power of the first feeder is calculated, and the reactive power of the first feeder is calculated by the first compensating reactive power. First inverter reactive power control means for controlling the first inverter so as to approach zero, and an output in which the maximum value of the first compensation reactive power in the first inverter is within a current withstand capability Is limited in advance by the capacity constituting the first inverter by the limiter limiting means for limiting to
When the reactive power cannot be completely compensated by the first compensation reactive power, the phase of the first compensation reactive power is opposite to the phase based on the difference value between the reactive power and the first compensation reactive power. A second compensation reactive power having a phase in the opposite direction is calculated, and the second inverter is controlled so that the second compensation reactive power generates reactive power in the second feeder line. further comprising a second inverter reactive power control means,
Control device for voltage fluctuation compensation device for electric railway. 請求項１記載の電圧変動補償装置の制御装置であって、
前記第１の単相交流電力はＭ座電力を含み、
前記第２の単相交流電力はＴ座電力を含む、
電気鉄道用電圧変動補償装置の制御装置。 It is a control apparatus of the voltage fluctuation compensation apparatus of Claim 1, Comprising:
The first single-phase AC power includes M seat power,
The second single-phase AC power includes T-seat power,
Control device for voltage fluctuation compensation device for electric railway. 請求項１記載の電圧変動補償装置の制御装置であって、
前記第１の単相交流電力はＴ座電力を含み、
前記第２の単相交流電力はＭ座電力を含む、
電気鉄道用電圧変動補償装置の制御装置。 It is a control apparatus of the voltage fluctuation compensation apparatus of Claim 1, Comprising:
The first single-phase AC power includes T-seat power,
The second single-phase AC power includes M seat power,
Control device for voltage fluctuation compensation device for electric railway. 電気鉄道用の電圧変動補償装置を制御する電圧変動補償装置の制御方法であって、前記電圧変動補償装置は、電気鉄道用三相／二相変換変圧器により第１及び第２のき電線から供給される第１及び第２の単相交流電力のうち、前記第１の単相交流電力を前記第１のき電線を介して電車負荷に供給する電気鉄道用電力給電システムにおける有効電力及び無効電力を、前記第１及び第２のき電線に接続される第１及び第２のインバータを用いて補償し、
(a) 前記第１のき電線の無効電力を少なくとも取得するステップと、
(b) 前記無効電力に基づき、前記第１のき電線の無効電力を補償するための第１の補償用無効電力を算出し、該第１の補償用無効電力によって前記第１のき電線の無効電力がゼロに近づくように、前記第１のインバータを制御するステップとを備え、前記第１のインバータにおける前記第１の補償用無効電力の最大値が、電流耐量以内の出力に制限するリミッタ制限手段により前記第１のインバータを構成する容量によって予め制限されており、
(c) 前記第１の補償用無効電力によって前記無効電力を完全に補償できない場合、前記無効電力及び前記第１の補償用無効電力間の差分値に基づき前記第１の補償用無効電力の位相と正反対となる逆方向の位相を有する第２の補償用無効電力を算出し、前記第２の補償用無効電力によって前記第２のき電線に無効電力を発生させるように、前記第２のインバータを制御するステップをさらに備える、
電気鉄道用電圧変動補償装置の制御方法。 A method for controlling a voltage fluctuation compensator for controlling a voltage fluctuation compensator for an electric railway, wherein the voltage fluctuation compensator is connected to the first and second feeder lines by a three-phase / two-phase conversion transformer for an electric railway. Of the supplied first and second single-phase AC power, active power and invalidity in the electric railway power supply system that supplies the first single-phase AC power to the train load via the first feeder. Compensating power using first and second inverters connected to the first and second feeders,
(a) obtaining at least reactive power of the first feeder line;
(b) calculating a first compensation reactive power for compensating the reactive power of the first feeder based on the reactive power, and using the first compensation reactive power, And a step of controlling the first inverter so that the reactive power approaches zero, and a limiter for limiting a maximum value of the first compensation reactive power in the first inverter to an output within a current withstand capability. Limited in advance by the capacity of the first inverter by the limiting means,
(c) When the reactive power cannot be completely compensated by the first compensation reactive power, the phase of the first compensation reactive power is based on a difference value between the reactive power and the first compensation reactive power. The second inverter is configured to calculate a second compensation reactive power having a phase opposite to that of the second compensation reactive power, and to generate a reactive power in the second feeder by the second compensation reactive power. Further comprising the step of controlling
A method for controlling a voltage fluctuation compensator for an electric railway. 請求項４記載の電圧変動補償装置の制御方法であって、
前記第１の単相交流電力はＭ座電力を含み、
前記第２の単相交流電力はＴ座電力を含む、
電気鉄道用電圧変動補償装置の制御方法。 A control method for a voltage fluctuation compensator according to claim 4,
The first single-phase AC power includes M seat power,
The second single-phase AC power includes T-seat power,
A method for controlling a voltage fluctuation compensator for an electric railway. 請求項４記載の電圧変動補償装置の制御方法であって、
前記第１の単相交流電力はＴ座電力を含み、
前記第２の単相交流電力はＭ座電力を含む、
電気鉄道用電圧変動補償装置の制御方法。 A control method for a voltage fluctuation compensator according to claim 4,
The first single-phase AC power includes T-seat power,
The second single-phase AC power includes M seat power,
A method for controlling a voltage fluctuation compensator for an electric railway.
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